Conair WSB, GB manual Tare Weight, Prt

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TH	AND	TL	(change	only if material		sticks in	the weigh		bin)
	TH	and	TL are acceptable error			limits for	TARE	WEIGHT.
Before		a dispense cycle			begins, the	software checks		to see that the
weigh bin is in place and that it is						not already full of			material. To
do	this	it looks at		the	starting TARE weight.

If Tare weight is below the value of TL, (50 grams), the software assumes that the bin is either missing or hung up on something. In this case the ALARM sounds.

If Tare weight is above the value of TH (100 grams), the software assumes material is in the bin. In this case the ALARM sounds and the weight bin dump flap operates in an attempt to empty the weigh bin.

If you are processing a material that has a tendency to hang up in the corners of the bin, then you may wish to widen the range of acceptable starting tare weight. Since tare weight is always subtracted from dispense weights, these errors do not effect accuracy.

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PRT (change to get AUTOMATIC printing of material totals)

PRT, when set to any number other then zero, will cause the processor to output all current material usage totals, at regular time intervals, to the printer port. The number you enter will dictate the time interval in MINUTES. All timing starts from MIDNIGHT. for example, an entry of 00120 will cause totals to print at 2 AM, 4 AM, 6 AM, etc. Printing always waits until a cycle has just ended. A setting of 10000 is a special case. This will cause a printout after every cycle. A printer must be connected. If one is not, the routine will abort and blending will continue.

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DLY (consider changing if mixing is a problem)

DLY is the TIME the mix chamber level sensor must be uncovered before a cycle begins. The sensor must be uncovered without interruption for the full specified DELAY time. To prevent false starts from material movement caused by the mix blade, a minimum of 2 seconds (00488) is recommended.

Sometimes throughput is slow enough that each new batch buries the mix blade for a while. When this happens the material on top does not mix well. To reduce this, you can delay the start of a new batch by increasing the DLY parameter. The new batch is delayed and mix chamber level has time to fall before the next batch is added.

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PRC (no change required)

PRC is the maximum allowable PERCENT rate change per cycle. If a large dispense error occurs, flow rate corrections do not exceed this percent number. This prevents large swings in timing of dispenses and provides for stable dispense rates under difficult conditions. For example, when dispense quantities are very small (one or two grams),

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